Portable hoisting apparatus



A. 1.Y ARWINE. PORTABLE HOISTING APPARATUS.

` APPLICATION FILED 'FEB- 2, 1921.

Patented Sept. 19, 1922.

` ARTHUR a. AnwrNr., or NNW New Yoan, N. Y., A FIRM. v

Patented` Sept. 19, i922.

l. entren YORK, N. Y., AssreNoia 'ro GrrLLrs ai GEoGHneAmor PORTABLErioIsTING AEBARAT'US. f i i l Appn'catri'on sied February 2, 1921'.seraiNoflfilinrfaa.

To all whom t may concern; j

Be it known that I, ARTHUR J. ARWINE, a citizen of the United States,residing in the city of New York, borough of Manhattan, in the countyand State of. New York, have invented a certain new and usefulImprovement in Portable Hoisting Apparatugoil which the following isaspecification. j

The invention .relates to portable hoistsI and more particularly towheeled trucks adapted to support hoisting andother mechanisms, and theobject of the invention is 'to provide a truck which shall oiler there'quiredj extended base for supporting vthehoisting apparatus and itsload reliably, and also permit the truck with its hoist to be movedthrough relatively small openings, as'factory doors or the like, andywhich sh'allbel simple in construction, easily operated,-an'd .emi-rnently strong and serviceable. o The invention consists 1ncerta1n`novel'teavtures andy details of constructionandarrangementbywhich the above andv other objects vare attained, to bevhereinafter vdescribed and'claimed. The accompanying drawings form apart of this specification and show an Iapproved form of truck with yahand-operated hoisting machine of the crane type mounted thereon. Figure1 is a side elevationl of thev truck and hoi-st. A

F ignre 2 is .ay sectionalplan view, the plane of section beingindicated by the line 2-2 in Figure l.

Figure 3 is av horizontal section, partly in lplan view', taken on theline in Figure 1.

Figure 4L yis va central vertical section through the main portion ofthe truck, certain parts being shown in elevation.

Referring to the drawings, 1 is the tubular l standard of a hoistingmachine, having a TheI Y On the upper disk is a vertical hol! vstandard1 which extends throughbothhdisks I and is supp0rted,with vfreedom" toVrevolve, on a step formed :bya plate 12'bolted vto the under faceof'jtheH-disk 8 vandfvfpr"oviding a recess yfor the receptionothe lowerextrem-` ity of'the standard. y

ard 1, vare `pivoted four radiallyv extending arms 13 each yequipped atits outer end with 4 Between the; disks at ltour; pointscircumterentially, the stand?,

'65 a casterV 14' arranged to swivel" oni-a hori zontal. ball-bearing`gti-,15 thus Support, thedisks and yhoist whiler permitting the fwholeto be rolle'deasily in any.y direction handle 1G attac iedltouonevot'y the'farms,or by any suitable means.

The arms are of sufhcient'length'itoialiord l i the required largebaise'fareawhen positioned at 'right angles/to each other and. theywarearm in assuming-this eXtendedfposition-is upper disk, struck i vthe i ofy,the The stops 18 are shownaslugs cast'iinteg# really v with Ithefdisk57 I In this .extended i condition the i i operations may be.safely performed jandthe 1.

truck with its hoistand ,load` may 'be rolledv from one position 14.-asdrequired.

narrow openings, as through .aldoor leading When it isnecessarydtoilmove 90 f from one sectionof the shop yor ,tactory'to Y toanother the'icasters .y

another, the l pins 1'?v are A,withdrawn and l` the opposite pairs ofarms swung awayy from their stops 18 toward each other into :the

collapsed `or narrowed position lshown in dotted lines in Figure 3, inwhich they strike against similar stop`sj19, withtheirrecesses l incoincidence with holes 2O inthe upper disk, and are held in suchnarrowed positions by rie-inserting the pins y17iny 4thelhol-is 20.`Thus conditioned the whole may pass through any opening ola widthgreaterthanv the `diameter of the disks, and. the v,arms

again extended at right angles forvturtherv hoisting operations.y i

- The'vertical depth'of the arms is prefere ably but little less .thanthe space-between the disks,so that the'inner ends of the' arms.y arestitliy supported' and the rigidity of the `structure assured:whilepierniitting the held in this position each 'by a ypinfl- ,in-75"i Serted through aeholeinithe"upper'i'diskf? and into a correspondingrecessgin,the.. upper p tace of thearnnandthe movement ,of each i, n,

limited by: a stopl .18 onthe' under faceot the 80 I:

arms to be swung to the limited extent required.

It the door-opening is su'iciently wide only lone of each ypair of armsneed be swungk toward its mate and locked in such shifted position. y

Other means than the hollow post 11 and platelQ may be employed tolsupport the hoist with liberty for the latter to be revolved inswinging the load; the arrangement shown'is preferredl as affording thedesired long rigid vertical bearing for the y standard l.

Although the invention is shown and described asl appliedto a hoisthaving a rotatable standard, it will be understood that the improved.truck may be employed to support other types of hoists, or with othermechanisms to which it'may be adapted.

' posed ,l kfholding them spaced apart, a centrally lonk aperture, aplate on the under face ot lowerdisk closing such aperture, a eyl1n- 1.ln a hoisting` apparatus, two disks disposed. horizontally one above theother, means for rigidly joining said disks and holding them spacedapart, a tubular post on the upper disk adapted to receive thecylindrical standard ot a hoisting mecha-I `n1sm,arms pivotally'mountedat their inner ends between said disks and movable horizOntally, andcasters ontheouter ends ot said' arms.`

` 2. ln a hoisting apparatus, two disks dishorizontally one above theother, means for rigidlyjoining Asaid-disks and cated tubular post onthe upper fdisk, and the lower disk having a centrally located saidlmost disk having holes 'therein and each or lnism on said disks, armspivotally mounter porting the standard oli a hoisting mechanism on saiddisks, arms pivotally mounted. at their inner ends between said disksand arranged to swing horizontally, stops arranged to limit suchv swing,and Casters on the outer ends oi said arms.

4t. ln a hoisting apparatus, two disks disposed horizontally one abovethe other, means for rigidly joining said disks and holding them spacedapart, means 'for supporting the standard of a hoisting mechanism onsaid disks, arms pivot-ally mounted at their inner ends between saiddisks and arranged to swing horizontally, the upper said arms having arecess therein matelling,` such holes, pins received in such holes andrecesses for holding said arms, and casters on the outer ends of saidarms.

5. ln a hoisting apparatua'two disks dis posed horizontallyv one abovethe other, meansy for rigidly joining said disks and holding them spacedapart, means for supporting the standard oiC a hoisting mechaat theirinner ends between said disks a arranged to swing horizontally, stopsarranged to limit such swing, the uppermost disk'having holes thereinand each of said arms having a recess therein matching such holes, pinsreceived in sueh holes and reeesses, and casters on the outer ends of 'larms.

f 6. In a hoisting apparatus, a truck oit the character set Jiorth, twohorizontallyv d" posed disks rigidly joined and spaced said disks beingapertured to receive a tical standard, tour arms pivotally mom at theirinner ends between said disks opposite pairs with v.the arms or eacharranged to swing toward andfrom other, means 'for limiting such swingin both directions, andmeans for holding eacn arm at such limit.

ln testimony that l claim the invention above set forth l ailix mysignature.

' ARTHUR d. Altllflll.

